MCB stands for Miniature Circuit Breaker. It is a common electrical device used to protect electrical circuits from overcurrents and short circuits in residential, commercial, and industrial settings.
An MCB is a compact switch that automatically interrupts the flow of electric current in a circuit when an abnormal current exceeds a certain predetermined value. It acts as a safety device, preventing damage to electrical equipment and wiring caused by excessive current flow.
The MCB consists of a switch mechanism that opens and closes the circuit as per the operating conditions. It contains a bimetallic strip, which bends when the current exceeds its rated limit, causing the MCB to trip and interrupt the circuit.
MCBs come in different current ratings, ranging from a few amperes to several hundred amperes, to suit the specific needs of different electrical installations. They are designed to provide reliable and efficient protection against overloads and short circuits, ensuring the safety of electrical systems and preventing fire hazards.
In addition to overcurrent protection, some MCBs also provide additional features such as earth leakage protection, which disconnects the circuit in case of a ground fault. This helps prevent electric shocks and further enhances the safety of the electrical system.
Overall, MCBs are an essential component of electrical installations, providing reliable protection against overcurrents and ensuring the safe operation of electrical circuits.
